It does "dumb down the game". Not in terms of how challenging it is, but certainly in terms of the depth of the game.
I used to have to actually find shady dealers in the backs of cities to track down items to make my new poisons,
I had to train up my lock picking so that I could pick more complex locks (and I used to have to carry around lock picking tools in order to),
I used to have to buy vanishing powder and blinding powder in case I needed them,
I used to deal more damage with poisons and have greater control stunning people to make up for being squishy as hell compared to all the plate wearers (maybe this was overkill at times).
I used to scope out corridors for our raid to find any traps to stop them getting activated while we're pulling trash.
Has the removal of all of this made my boring rotations any more "easy"?? No.
Has it helped to completely sucked pretty much all character out of the class??? Hell yes.